Mold for forming silos of concrete and the like.



A. J. STOESER. MOLD FOR FORMING SILOS 0F CONCRETE AND THE LIKE.

I APPLICATION FILED FEB. 8,1913 1 ,1 22,329; Patented Dec. 29, 1914.

2 SHEETSSHEET 1.

4 A. J; STOESBR. MOLD FOR FORMING SILOS OF CONCRETE AND THE LIKE.

APPLICATION FILED FEB. 8, 1913.

1 122829. Patented De0.29,1914.

2 SHEETSSHEET 2.

Z I 43 I n .-;4, f 4/ V 45 v I 26 /6 l 40 J O 2%? 24 A 3/ Q 55 J: o V 3/ 3;

fix 8 a f 53 o 36 a 4 $65;- 3 3 fwcmisn- I o MMME6W MM, 25 6 W 1. a m W rain i i lLEXANIDER J. STOESEE, O1" CHICAGO, ILLZN OIS.

To all wk/1m it may concern:

De it in that I, inear-moan J. S'roE-' sizn, 'n of the Suited States, and a resident o1. {,hicago, Cool; county, lllinois, .5 have invented certain new and useful Improvements in Molds for Forming Silos of Concrete and the lil'e, of which the following is a specification.

T he general object of my invention is to provide a mold for erecting concrete silos with less labor and at lower cost than is possible with molds hitherto devised, and a further ol ectis to provide mold wherewith the body portion. of the silo. and the chute can be simultaneously made to form a continuous wall r substantially uniform strength.

This application is a division of my pending application Serial No. tlllgiliffiled'ljeceniber 32nd, 1911,.entitled Apparatus for erecting concrete structures.

My invention consists generally insa mold for concrete silos comprising a substantially cylindrical outer wall having a relatively small substantially U-shaped protruding portion, a cylindrical inner wall spaced from the outer wall and a supplemental inner wall a ranged Within the protruding portion of the outer wall and forming a chute mold space continuous with the mold space of the main wall.

My invention consists further in a mold for erecting concrete silos, comprising a. pluralsection cylindrical inner wall and a a plural section substantially cylindrical outer wall spaced therefrom, one portion or" the outer wall having a substantially U-shaped pr i truding portion and supplemental inner wall arranged within the protruding portion oi the outer wall spaced therefrom and torming substantially U-shaped mold c'avity continuous with the mold cavity toiane'd by t heunner wall and the cylindrical portion ot the outer wall.

v invention also consists in a mold for making concrete silos comprising a cylindri- "us each consisting of a plurality of secremovably secured together, an outer ll. the major p- :tion of which is cylindrii in. spaced from the inner u l and "it'ially U-shaped protruding .ably connected to the major ral section U-shaped supple wall arranged wi Specification of Letters Patent.

. the mold .ner wall composed. of upper and lower' iin the pro Patented Dec. 29, 15914,

22, 1911, Serial No. 857,345. lzividcd and this application filed' 'jehruary Serial No. 747 387.

truding portion of the outer wall, the fre ends thereof abutting the inner wall and the supplemental inner Wall forming, with the protruding portion of the outer wall, a chute mold space continuous withthe mold space of the main wall.

My invention consists further in molds f r erecting concrete structures wherewith the objects named above and several other objects which will hereinafter appear are attainable.

My invention will'be more readily understood by reference to the accompanying drawings which illustrate the preferred embodiment thereof and in whichm Figure l is a central vertical section showing tvvo sets of mold forms arranged in operative position with concrete elevating and distributing mechanism mounted thereon. Fig. 2 is a transverse sectional view of the mold forms. Fig. 3 ,is an enlarged transverse section oi the chute portion of Fig. l is a vertical section on the line of Fig. Fig. 5 is a perspective view or the ladder member showing its relation to the main wall of the mold. Fig. G is a perspective View of one of the clamps or straddle members for holding the segments of the form together; and Fig. '7 is a perspective View of one of the U-shaped clamps for straddling the outer and inner walls ot the mold.

A silo which is circular in cross section is better adapted to the proper preservation of silage than a square or rectangular one. The reason or this is that silage can be more tightly packed in a circular silo than in a square one, With the result that there is less danger of air passages to cause fermentation of the silage The silage should be removed in layers of two or three inches per day and in order that this may baconveniently done a vertical slot, preferably the entire height of the structure isatormed at one place in the circumference and at this place a chute is provided through which the silage can be thrown to the ground, and through which a person'can climb to the top of the silage. 1 With apparatus hitherto devised it. has been. difiicult if not impractical to ion build achute simultaneously with the main body of the structure and hence in erecting concrete silos. the body portion has usuallybeen erected first. d then a chute of wood or other -material} ;.dded later. This is not its extent, but at one V i a substantially U -shaped a I shall now describe my mold with which the silo body portion and chute can be 'constructed simultaneously in an easy and in expensive manner and thereby producing a structure which will not crack at the junc .ture of the body chute portions and one which is substantially air tight. I usually are alt-ernately placed one upon the other ing successive courses of wall. are identical in construction, of one will serve for both. For the sake of ease in description, I shall refer to the forms shown as upper and lower .forms. The lower form 1 comprises anroute'r wall 2 and an inner wall 3. These are spaced apart to form a mold cavity for receiving the :con-v crete forming the concrete wall it. The inner wall 3 is cylindrical'andcomprises a plurality of segments 5 which aredetachably connected in a manner tobe described in detail hereinafter The outer wall 2 is cylindrical throughout substantially all of portion protrudes in manner to form portion 6. The portion .6 in conjunction with a supplemental wall 7 serves to a1 cavity for forming a chute portion 6' of, the silo! v vThesegments 5 of th'einner wall 3- consist of sheet'metal braced above and below by angleirons 10 and 11 respectively and at each end by vertical angle irons 12. The

segments 5 are suitably alined by pins 15 passing-through the flanges l3. 'Clamps 16' which straddle the adjacent flanges serveto hold the forms rigidly but removably together.

Two of the segments 5' are slightly spaced-apart at .17 bywedge blocks 18 which may be. contraction of the 'inner' wall .and thereby enable easy removal of the various,:seg-' "ments. Theouter wall2 comprises a plurality ofsegmentsQlconstituting the main or'body portion of the wall and. the member 2-5'constituting the chute portion; The segments 24 are similar in construction to the segments 5 01* the inner wall comprising a sheet3member'26 braced above and below by angle irons 27'and 28 respectively and at the ends by vertical angles29. The flanges 29- of "the angles 29 are' provided .withf registering holes through which pins 15. pass to ali'ne thescgments. straddle the adjacent flanges 29" tohold the segments removably together in the samemanner as the segments of the in'-;

ner wall. -The.'chute;member 6 comprises a substantially" Usshaped' curve theefree' ends 31 the ends 24? of the main outer. wall. Thejunctureof the provide knocked out' to permit Clamps, 16 and serve I sheet 30, and'I outwardly to meet.

holes to register with the'holes in the flanges '29 of the main outer wall and through thesealined lioles pins 15 are passed. Clamps 16 serve removably to hold the chute member 6 to the outer wall. While "I have shown the outer wallof the chute mold as consisting of but one member, it maybe made of several-members if desired,

but by giving a slight taper to the side thereof,'I am able with a single member. to form the .wall and easily remove the mold therefrom.

outer wall todneet the main Wall agentle is proof against cracking-V The inner wall 7 of the chute form comprises' a plurality of segments 36, each of which consists of a sheet 37 strengthened at the topv and bottom by angle irons 38 and 39 respectively and atthe ends by vertical. angles .40, the adjacent flanges of which are provided with registering holes and the members are removably attached by pins 15 and clamps, or. wedges 16.- The members 36 are spaced ashort distance from the inner wall between is occupied by wall members 41 which are'not properly part 'Of. either the upper or'lower form, but which act in conjunction with both to complete the form. The wall members 41 are braced by vertical angles-42 and 43, the angles 42 the inner wall 3 of the main form and the angles 43 contacting and alining with the angles 40- bolts 44- passing' through'the walls and engaging; the angles 42 of the member 41 in position. The other edge is properlyheld in position by a plurality of U. clips 45 which are riveted at the angle 43 and which straddle the flanges {of the a'djacentangle irons 40. The members 41 are further strengthened against collapse byspacing bars 46 which have turned down end portions for engaging. the flanges 47 of t e members 41. In some instances, I fuzther brace the members 41 by means of U clips 46, (see Fig. fl).

By curving the ends of the 3 and the space there-' serveto hold one edge.

walls contacting of the adjacent segment 36. L,

In order that the silage can be easily to have a ladder in gotten at it is necessary purpose I arrange done by. placiugla plurality of door sections.

'across the passagei between tlleitWO spaces:

spaced whichf'liave To hold the door sections against thepres sure oi the silage and to pnovide verticallysliding ways for the door, I provide the members it with. projecting portions li which form substantially V-shaped recesses in the inner sidesof thechute walls- These recesses accommodate the ends ofthe door sections (not shown) and permit vertical movement thereof for the purpose ot providing opening 01% limited size at difierent heights through which the silage can be thrown. The-plastic concrete exerts great pressure uponethe mold; walls, and to prevent the ends ofthe U from moving outwardly I provide. temporary braces. The braces consist of turn buckles which com.- prise a turn buckle portion 51 and end links and which extend through. the outer wall 6. Through the ends of the links 52 and 53 I place stop pins 5%. As it is necessary to remove the turn buckle braces after the formation of the wall both to perniit removal of the outer chute wall and to provide an uninterrupted chute passage, I provide hook eye connections 55 between the turn buckle p arts, one being formed to permit entire separation thereby enabling the turn buckle portion to be swung at right angles to the other end 5 so that the portion in the wall can be removed in the limited chute space. it should be noted that the mold for making the main wall and that for making the chute portion are rigid and virtually constitute a single walls In conjunction with the main inner wall and the-supplemei'ufial inner wall a continuous passage is provided whereby an integral main wall and chute can be made. Further to tie the chute and main walls together I pass reinforcing niaterial 3 from the main'wall around the chute wall and back.

The upper form is vertically alined with and placed upon the lower form and is proi'idcd 'with holes which register with holes in the adiaccnt angle irons of the t Yer Lorin. Pius l5 are passed through these registering holes and serve to aline the upper and lower forms. By means of clamps or wedges l6, theupper and lower terms are i'eniovably but rigidly attached. line means for connecting the upper and lower forms is therefore the same as that for securing the various segments or" the her and inner walls together.

ii are shown concrete elevating and distributing mechanism mounted upon the 4 upper term, but as this is the subject inat- ,tcr my pendingapplication mentioned above, I shall not describe the same in detail. 1 will state, however, that the web or lmse T1 of the apparatus serves to hold the outer and inner walls of the n l in proper spaced relations. This is arco uplishcd by means of limit pins or bolts (3:2 spaced apart thc desired distance, which extend through pressure of as followsz The material is raised by means of the. concrete elevating and distributing mechanism and deposited in the forms until they are both filled as shown in Fig. l.

aimto make the upper and lower forms of such height that when placed together they form a mold cavity er such depth-that as many men as can conveniently and economically walk upon the structure can fill the same in a day. Hence after filling the mold one day the concrete will have set sufficient by the next day to permit removal of the mold. walls. I proceed first to remove the segments of the lower inner wall form and place them upon the inner wall of the upper form, there suitably securing them by means of the pins and wedges. The various sections of'the outer wall are then taken from below', placed upon the upper outer wall,

and there suitably secured... The various sections of the supplemental inner wall are also taken from below placed above and connected to the inner wall. In this manner a new mold cavity of one form height is formed which is filled withconcrete and then, the now lower form, may be removed and placed upon the mold containing the green concrete. In this manner two courses of wall can be formed in a day. Uf course, it found convenient three or more completeforms may be provided whereby any desired nuinber oi? courses can be built in a day without interruption. My mold is simple in constructime and an be used by one who is not especially skilled in the art. The forms are selfsupporting, that is they do not need support from the ground or from rods or pipes embedded in the wall.

The objects outlined above are attainable by the apparatus here described, but because this disclosure will suggest to others apparatus of different modified forms whereby the-objects can be substantially attained, 1 do not oare-to liniit myself to the specific structure herein shown and described,

1 claim:

1. Ln molds for i orrning silos of concrete and the like, the "ination, an inner wall, an outer wall, a substantially semicircular protrusion on outer wall, and a supplemental inner wall, acting in conjunction with said protrusion to form a chute inold, said inner wall is sing the space s anned 1 1.. l and the iilte, tilt;

.-bination of segmental,

llfi

outer andvinner walls, spaced apart: to form a'niold cavity', a protruding portion onthe outer wall, a supplemental inner Wall arranged within the'prot-ruding portion of the by the 'v'su'p'plemental :iuner wall, substantially,'as=described.

3.2111 molds for forming silos of concrete anditlie like, the combination ott an inner and an outer Wall, eash'comprising a plurality of'se'gments remova-bly secured together,

' a protruding segment of'the main outerwall forming'therewitlra continuous outer wall,;

a supplemental" inner" Wall arranged ,within saidprotruding ksegment, said inner wall bridging the space spanned by the supple- .inn'erv walls, eai:h"comprisinga plurality of mental-innerwall, as and for the purpose 20 I v I a specified; v I a I 4; In molds for forming silos of concrete and the like, the combination ,of outer and vsegmentsremoraloly secured together, a protruding portionon :the outer wall remo'v-' ablyiittached thereto, a supplemental inner 'Wall' arranged within said protruding or,- tion and comprising a plurality-ofmem ers removably secured together," the extreme membersthereof being removably secured to the inner wallof tl emain form, substantially as described.

5. ;In: molds for "forming" silos of concrete and the like, a: circularf-inner Wall comprising= a u plurality, of segments removably se-' [cured together, a substantially circular outer.

wall spaced therefrom, in combinationwith .a substantially Ufshaped protruding portion on the outer wall, a supplemental inner wall paced Within sald-protruding portion and comprising afi'plurali ty of segments-removably secured together and ending a short distance frorn the inner Wall of the. main form, members 41 arranged between the inner wall and the ends of said supplemental wall, means 're'movably -securing same to the inner fwall,'and means removably securing same-to the end members of the supplemen-v talw'all, substantiallyas described. 6.- In molds vfor forming silos of concrete inner "walls, each comprising a plurality of segments: removably secured together, alproe truding portion-on the outer Wall removably attached thereto, a supplemental inner wall, arranged Within said protruding portion. and, comprising a plurality of members removably' secured together, the extreme memhers thereof being removably secured to the inner wall of the main form, the inner, wall bridging the space spanned ,by the" supple Y into the [mold rece'ss for .5

mental inner Wall,"-and;V-shaped members on the supplemental inner wall projecting formigzig do 1r grooves {the finished *wall.

plemental inner wall for In molds for forming silos of concrete and the like, a multiple segment outer wall anda multiple segment inner wall, a protruding portion on the outer. wall removablyattachedthereto, a supplemental inner wall 1 arranged within said protruding portion to v form a suitable mold cavity continuous with v the main mold cavity formed by the outer holding the outerand inner walls in any desired spaced relation and means holding the .supplemental inner wall in desired spaced relation to the protruding portion of the main outer wall. I

8. In molds for formingsilos of concrete and the like, an inner mold wall, an outer 1ty,-said of1ter wall having a protruding portion, a supplemental inner'wall'arranged "Within said protruding portion and spaced therefrom to form a mold cavity communi- ,catingi. with the main mold cavity, -a turnbuckle brace extending through the protruding portion of the outer wall and the suptying opposite sides of the protruding portion of the-outer well together, said brace being easily coland inner 'walls, in combination with means molds'pacedtherefrom to form a mold cavlapsible forpurpose of removal after forma- 1 tion of the Wall.

9. 'A mold for forming silosof concrete and the like, comprising a cylindrical inner- .wall composed of upper and lower forms,

,each consisting of a plurality'of sections restantially U-shaped protruding portion on tie outer Wall detachably connected to the cylindrical part of} the outer wall, a U shaped-supplemental inner wall arranged Within the protruding portion of the outer vall, and abu'tting the inner Wall and the by as and forthe purpose specified. 10. A mold for forming silos of concrete and the like, comprising a cylindrical inner wallcomposei of upper and lower forms, and the like, the combuiatmn of outer and each consisting of a plurality of sections rean outer wall consisting of a p'luralitypf sections detach ably connected, the ma or portion of the outer wall being cylindrical in-v form and spaced from the inner wall, a minor substantiallyU-shaped protruding portion on the'outer wall detachably connected to the cvlindrical part of thepu'ter Wall, and a U-shaped su-pplementalinner Wall arranged Within the protruding portion of the outer wall, the free-. endsthereon abutting the innerwalland the supplemental inner wall {arming with the= rotrudin g pprtic of the -1' nner wall bridging-the space spanned therewith the mold outer Wall a chute mold space continuous space of the main wall. 11. Ina mold for. forming silos of concreteland the like, the combination of a {plural section cylindrical inner wall, a

plural section outer wall cylindrical inform throughout substantially all itsextent, a substantially U-shaped member detachably connected at the free ends of the U to the cylindrical portion of the outer Wall,- a

plural section substantially U-shaped sup-' plemental inner wall arranged Within the portion of the outer wall,

protruding portion of detachably securing the segments of the supplemental inner wall together, and means detachably securing the free ends of the supplemental inner Wall to the main inner wall.

12, In a mold for forming silos for concrete and the like, a plural section outer Wall substantially cylindrical in form, a U- shaped member outer Wall and connecting the ends of the cylindrical portion of the outer wall, a plural section inner Wall concentrically arranged Within the cylindrical portion of the outer Wall, two of the adjacent segments of "the outer Wall, means the inner Wall between the ends of the cylindrical part of the outerw'all being brought close together, Wedges between the ends of the inner wall and adapted for easy removal to permit the collapse of the inner Wall, and a supplemental U-shaped inner Wall having its free ends detach-ably secured to the inner Wall substantially equally distant from the center of said space, and the supplemental inner Wall extending into the protruding as andrrtor the purpose specified;

; ment with the inner Wall,

from the slightly separated section ends as detachably secured to the p 13. In a mold for forming silos of concrete and the like, a plural section inner Wall, means detachably securing the sec.- tions together, and means holding two continuous sections slightly apart, a plural section outer Wall cylindrical throughout substantially its' whole extent and cylindrically spaced from the inner Wall, a substantially U-shaped member provided with outwardly flaring free ends curved to meet the cylindrical portions'of the outer wall, means detachably securing the U-shaped member to the outer Wall, and a supplemental inner wall Ashaped member and extendinginto engageat points spaced and for the purpose specified.

1a. In molds for forming silos of concrete and the like, an inner mold Wall, an outer mold spaced therefrom to form a mol cavity, said outer Wall having a protruding portion, a supplemental inner wall arranged Within said protruding portion and spaced therefrom to form a mold cavity communieating With the main mold cavity, means exthe ends of arranged Within the U- 7 tending through the protruding portion of, v

the. outer Willlt and the supplemental inner Wall for temporarily tying the opposite sides thereof together, said means being I formed for easy removability after the formation of the concrete Wall.

In testimony whereof, l have hereunto set my hand, this 25th day of January, 1913, in the presence of two subscribing Witnesses.

ALEXANDERJ. STOESER. Witnesses:

ARTHUR W. Nansen, M. SIMON. 

